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Two Harbors, Lake County, Minnesota, USAi
| Regional Level Types | |
|---|---|
| Two Harbors | City |
| Lake County | County |
| Minnesota | State |
| USA | Country |
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Type:
Largest Settlements:
| Place | Population |
|---|---|
| Two Harbors | 3,578 (2017) |
Two Harbors is a city and the county seat of Lake County. The city is on Lake Superior's shores approximately 30 miles northeast of Duluth. Two Harbors is known for being a shipping hub for processed iron ore from the Mesabi Iron Range.
The 3M Company was founded in Two Harbors in 1902. It survived an initial mineralogical error when founders mistook plagioclase in anorthosite for corundum and attempted to start an abrasive industry on that basis.
Bedrock geology consists of Precambrian (1.1 billion year old Keweenawan) basalt lava flows and gabbroic plutons, well exposed in road cuts and in outcrops along the shore of Lake Superior.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
Mineral list contains entries from the region specified including sub-localities4 valid minerals.
Detailed Mineral List:
| ⓘ Calcite Formula: CaCO3 |
| ⓘ 'Chlorite Group' |
| ⓘ Laumontite Formula: CaAl2Si4O12 · 4H2O |
| ⓘ Prehnite Formula: Ca2Al2Si3O10(OH)2 |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Quartz var. Agate Formula: SiO2 |
| ⓘ Quartz var. Chalcedony Formula: SiO2 |
| ⓘ Quartz var. Lake Superior Agate Formula: SiO2 |
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Quartz var. Agate | 4.DA.05 | SiO2 |
| ⓘ | var. Chalcedony | 4.DA.05 | SiO2 |
| ⓘ | 4.DA.05 | SiO2 | |
| ⓘ | var. Lake Superior Agate | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| Group 9 - Silicates | |||
| ⓘ | Prehnite | 9.DP.20 | Ca2Al2Si3O10(OH)2 |
| ⓘ | Laumontite | 9.GB.10 | CaAl2Si4O12 · 4H2O |
| Unclassified | |||
| ⓘ | 'Chlorite Group' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Laumontite | CaAl2Si4O12 · 4H2O |
| H | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| C | Carbon | |
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Quartz var. Agate | SiO2 |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Quartz var. Chalcedony | SiO2 |
| O | ⓘ Laumontite | CaAl2Si4O12 · 4H2O |
| O | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Quartz var. Lake Superior Agate | SiO2 |
| Al | Aluminium | |
| Al | ⓘ Laumontite | CaAl2Si4O12 · 4H2O |
| Al | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| Si | Silicon | |
| Si | ⓘ Quartz var. Agate | SiO2 |
| Si | ⓘ Quartz var. Chalcedony | SiO2 |
| Si | ⓘ Laumontite | CaAl2Si4O12 · 4H2O |
| Si | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Quartz var. Lake Superior Agate | SiO2 |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Laumontite | CaAl2Si4O12 · 4H2O |
| Ca | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
Fossils
This region is too big or complex to display the fossil list, try looking at smaller subregions.Other Databases
| Wikipedia: | https://en.wikipedia.org/wiki/Two_Harbors,_Minnesota |
|---|---|
| Wikidata ID: | Q993483 |
| GeoNames ID: | 5050817 |
Localities in this Region
- Minnesota
- Lake County
- Two Harbors
- Lake County
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References
Two Harbors, Lake County, Minnesota, USA